Crusher.



W. A. KRAEMER.

CRUSHER.

APPLICATION FILED IAN. 28, |918.

1,282,870.. Patented OCI. 29, 1918b @AWM/@f m: mmm www zu. mmmumo.msnmcron. u. c.

35 stantly guided against I inairnnsrarns partner WILLIAM A. KBAEMER, OFGHICAGQILLINOIS.

CRUSHER.

To all whom t may concern:

Be itk-nown that I, WILLIAM KRAEMER,

a citizen of the United States, residing; at Chicago, in thecountyV of@ook and State. of

Illinois, havevinvented certain new -andsuseful ImprovementsiniGrushers, of which .the following is a specification.

My invention relates tocrushers and has.

for its primary object-the provision of `an l0 improved device-ofthischaracter adapted for crushing sugar, salt and siniilarwsub--stances of a hygroscopic character whereby an improved crushing elementtraveling along a pressure resisting wallrresiliently presses `uponlumps'of vmateria-l lto reduce them Vto a finely` divided state and isangu-i larly adjustable with respect to thewall. A

further object is therprovisionof` a crushing plate mounted for limitedoscillation `with.` respect to a bar upon Vwhich it is carriedas well asforfbodily adjustment with said bar'4 as respects the surface of4 thepressure resisting wall.

A further lobject is the provision in a Crusher of'an open bottom-hopper together with a pressure resisting wallengaging-theloweredge ofthehopperand apertiired for communication therewith and a crushingelement below said wallresilientlypressed against the `wall on the sideoppositeto'the hopper, said element being longer than the aperture inthe wall so that as the element passes the aperture, it is retained fromen` tering the hopper by having its ends conthe wall at the ends oftheaperture.

Other objects and advantages, of my in vention will appear from thefollowing dei scription 4taken in Vconjunction" withV the accompanyingdrawingswhich form a `partof this specification and illustrate thepreferred embodiment of my invention.

Inthe drawings: j Figure 1 is a side elevation of'my iiiventionshowingthe lower portion'ffof the hopper together with the lcrushingchamber and parts associated therewith in section substantially on acentlrallyvertical transverse plane; Fig. 2, isa-n end elevationthereof;

Fig. 3, is a section taken on line 3-3 of Fig. 1; Fig. 4, `is `an.enlarged side elevation broken away and of one of the crushing platestogether `with the bar upon-which the same is carried.

Specification of Letters Patent.

Vand the crushing` chamber.

Patented Get. 29, 1918.

Appiication flied January 2s, 191s. ysemina. 214,039.

Reference inumeral 10. indicates generally the frame: of the crusherwhich supports at `its uppereend a hopper 11 havingan open bottom. `Endplates 12 are supported in `any `suitablef manner inthe frame, `carryingthe sure chamber andpreferably at the extreme `ends thereof the axleilf?carries a pair of spiders 21ueach1of which carries radially extendingarms 22projecting `oppositely in pairs from. the Arespective spiders.spidersthemselvesare `keyed as at 23 tothe axle; The arms 22 areiall ofequal length and terminate short of the iwall`13, the axle `17 'beingconcentricwith thewall. At their tipsi the arms 22 are formed withhollow bearings 24; intel-which i'itfthe rounded ends 25.02f bars `2G.`These bars, as best seen in Fig. 3, are preferably rectangular and have'theirV adjoining surfaces 27 and 28 meeting on an edge 29fwhich isyprojected toward, but spaced somewhat from the pressure resisting Ywalll13. APreferably the faces 27 and 28 of each bar 26 form angles of 45with the lplaneiilefined by. the aXis of the upperbar and the aXisroftheafXle 17 so' that a con siderable angle is formed between the.arcuateiwall 13 and the surfaces 27 and 2S. At intervals each bar isradially transiixed by a threaded dowel pin 31 which engages threadedapertures provided at intervals in each bar. The tips 32 of these pinsproject through the-edge 29 and toward the wall 13 in each instance,though preferably terminating short of thewall.

At 33 is shown the crushing plate of my invention preferably formed of apiece of thin -webbed angle bar, the back web 34 of which overliessurface28 of the bar 2GV and thefforward crushing web 33 of which overrlaps surface 27. The webs 33 and 34 are The right-angled as are thesurfaces 27 and 28 of the bar. The angle of the plate formed by webs 33and 34 is pierced for engagement by the tips of the dowel pins 31, thesepins fitting loosely within the apertures of the plate in order that theplate may, in opera-tion, oscillate through a limited path on an axisparallel to edge 29. Each bar 26 is formed with spring recesses openingfromthe faces 27 and 28 and springs 36 are bottomed in these recessesand press outwardly against the inner surfaces of webs 33 and 34:,thereby holding the crushing plate spaced from the bar andwith its anglein contact with the wall13 as seen in-Fig. 3. Because of the space leftbetween the crushing plate and the bar, the bar is permitted the slightoscillation labove described. In Fig. 1 `will be seenV set screws 37 bymeans of which the bars 26 are held fixed in their bearings2l.`

If the character of material Ybeing crushed requires it, these setscrews 37 may be loosened and each bar 26 adjusted about its own' axisin' order to lessen or increaseY the angle formed between the wall 13and the web33 of the crushing plate. Such adjust- `ment is indicated at35 by dotted lines in caught between thewall 13 and the web 33 will becrushed to a finely divided state and forced through the wall. Shouldthe material being crushed contain extremely hard lumps of foreignmatter these lumps will pass between the wall and the angle of thecrushing plate depressing springs 36 and preventing distortion of thewall. Should a large lump of material lill the angle formed by the walland the crusher plate, the plate will yield until it strikes theVsurface 27 of the bar whereupon the-lump will be crushed and therebound of springs 36 will startthe crushed material out through thewall 13 before the material packs within the angle.

From Fig. 1 it will be seen that the extremities of each crushing plate33 will bear against the portions 14 and 15 of the wall 13 of thecrushing chamber so that the springs 36 can never force the crushingplates upwardly into the hopper. Preferably the crushing surface of theplate 33 is lmurled as shown in Fig. 4 in order that it may readily holdlumps to be crushed.

While I have illustrated and described the preferred embodiment of myinvention, it is obvious that one skilled in the art may mairevmodifications thereofwithout departing from the spirit of the invention.I

wish, therefore, not to be restricted to the preciselembodiment shownexcept in so far as the same is limited in the appended claims. y

I claim:

1. In a Crusher, the combination with a pressure resisting wall, of abar movable along the wall, and a crushing plate swingingly supported onthe bar and yieldingly held spacedtherefrom and in contact with saidwall.

2. In a Crusher,"` the combination with a )ressure resistin wall of yabarmovable along the wall and in spaced relation thereto, saidbar havingtwo angularly related faces `the meeting edge of which parallels thewall and is projected` toward the same, a crushing plate comprising anangle bar of less 4thickness than the `distance from said meeting edge.'to the wall, the webs of which plate meet at an angle substantially thatofv said angularly related faces, said webs respectively` overlying saidfaces, dowel pins carried in the bar and projecting loosely throughapertures provided in the angle of said plate, and springs `interposedbetween the ,bar and each web of the plate.

3. Ina crusher, the combination with a pressure resistingwall aperturedfor` communicationwith a hopper, of a bar spaced from the wall andmovable in parallelism therewith, and a crushing plate Vcarried by`movable in parallelism therewith, of a bar.

fixed in said arms, adjustable therein Yabout an axis vparallel to thewall, said bar being spaced from they wall, and a crushing plate mountedonl the bar andyieldingly pressed against the wall.

6. In a Crusher, the combination with a pressure resisting wall, and`supporting arms movable in parallelism therewith, of a bar fixed in saidarms, .adjustable therein about an axis parallel tothe wall, said barbeing spaced from the wall, a crushing plate -mounted on the bar forlimited oscillation about an axis positioned between the bar and wall,and springs normally holding said plate against the wall and spaced fromthe body of the loar. z

7. In a Crusher, the `combination with a' cylindrical, foraminated,pressure resisting Wall, of an axle concentrioally rotatable said Wall,a crushing plate overlapping two therein, supporting arms radiating fromthe sides of the bar and loosely doweled on said axle, a bar fixed insaid arms, adjustable pins, and springs normally holding said lo thereinabout an axis parallel to the Wall, plate against the Wall and spacedfrom the said bar being spaced from the Wall, lonbar.

gitudinally adjustable doWel pins transfiXed In testimony whereof I aixmy signature.

in the bar and projecting therefrom toward WILLIAM A. KRAEMER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C."

